In short: the speed of document collection is set by two numbers — how long a complete file takes (time-to-complete-file) and how many interactions each document costs you (touches per document). A dedicated portal is the fastest method on both, but it's not the only option. Below are five methods ranked, with honest trade-offs: there are situations where a shared folder, or even disciplined email, is the right call.
"3× faster" isn't marketing arithmetic. A file collected over email typically takes two to three weeks of drip-fed attachments and follow-ups; the same file through a well-run portal commonly lands in three to five days. The gain doesn't come from borrowers suddenly becoming organised — it comes from removing the waiting built into the process: waiting for them to find the list, waiting for you to notice a wrong document, waiting for the next follow-up you forgot to send.
The two metrics that matter
Before choosing a method, decide how you'll measure it:
- Time-to-complete-file: days from first request to the last document validated. This is the number your clients feel and your lender deadlines depend on.
- Touches per document: every email, call, or message a single document costs before it's correct and filed. A document that arrives right first time is 1 touch. A screenshot you reject, re-explain, and re-receive is 4–5. Multiply by 25 documents and 20 live files and you've found your missing afternoons.
Whatever method you pick, track both for a month. The method that minimises touches usually wins on time too, because touches are the delay.
1. A dedicated document-collection portal
The strongest method, because it attacks every source of delay at once: the borrower always sees what's missing, wrong documents get feedback immediately, and reminders go out without you.
What to look for — these features separate portals that work from portals borrowers abandon:
- No borrower account or app. One private link per borrower. If they must register, set a password, or install something, a meaningful share never start — and you're chasing logins instead of documents.
- Phone-first upload. Most documents arrive from a phone, in the evening.
- Checklist templates per borrower profile, so requests are complete on day one (start from a mortgage document checklist if you're building yours).
- Validate/reject with reasons, visible to the borrower instantly.
- Automatic reminders that name the specific missing items and stop when done.
- Clean export — named, ordered, bank-ready, not a zip of camera-roll filenames.
Trade-offs: it's another subscription, and it only pays back with volume — below roughly 3–4 files a month, the simpler methods below may be enough. There's also a one-time setup cost building your checklist templates (an afternoon, honestly). For how the established players compare, see our notes on Floify alternatives.
2. Shared cloud folder (Google Drive, Dropbox, OneDrive)
The pragmatic middle ground: create a folder per client, share the link, pre-create subfolders named after each required document.
Pros: free or already paid for; no new tool to learn on your side; no attachment size limits; everything in one place.
Cons, and they're structural: the folder shows what's been uploaded, not what's missing — the borrower still can't see their to-do list without cross-referencing your email. No validation loop: a wrong document sits there looking like progress until you check it. No reminders: you're still the chase engine. And shared-link permissions are easy to get wrong (a folder shared "anyone with the link can view" containing bank statements is a quiet GDPR incident).
Verdict: a real upgrade over raw email for storage and size limits; does nothing for visibility, feedback, or chasing. Works best for organised borrowers and low volume.
3. E-signature platform attachments (DocuSign, Dropbox Sign, etc.)
If you already use an e-signature tool for agreements, most can request file attachments alongside signatures.
Pros: one workflow for "sign this and attach your ID"; decent audit trail; borrowers take signature requests seriously, so completion rates on the first pass are good.
Cons: these tools are built for envelopes, not collections. Multi-document checklists get clumsy fast; there's no concept of rejecting one document and keeping the rest; iterating ("statement was wrong, resend") means a whole new envelope; and per-envelope pricing punishes the back-and-forth that mortgage files inevitably involve.
Verdict: excellent for the 2–3 documents that travel with a signature; wrong tool for a 25-item file.
4. Email with rigorous templates
Email can be made much faster than most brokers run it — not by changing the channel but by changing the discipline: a complete checklist in message one, exact format specs ("PDF download, not screenshots"), scheduled day-3 and day-7 follow-ups naming the specific missing items, and same-day review of everything that arrives. We've published the full set of templates for this.
Pros: zero cost, zero borrower friction to start, works for every client alive.
Cons: all the discipline lives in you — the follow-up schedule, the missing-items tracking, the same-day reviews — and discipline is what evaporates in a busy month. Plus the structural problems no template fixes: attachment limits, version chaos, and an inbox that becomes an unencrypted archive of your clients' financial identities (the security and GDPR side deserves its own discussion).
Verdict: the best free method, and the right one at low volume. Its ceiling is your consistency.
5. WhatsApp / SMS
Deserves an honest entry because brokers use it constantly, usually off the record.
When it helps: as a nudge channel, it's unbeatable — open rates near 100%, replies in minutes. "Just the March payslip left and we can submit 👍" by WhatsApp moves files that emails don't. For a quick photo of an ID to pre-check before the formal upload, it's genuinely fast.
The caveats are serious though. Documents received on WhatsApp live on your personal phone, backed up to your personal cloud, outside any retention policy — a GDPR problem in the EU/UK and a record-keeping problem everywhere (AU brokers: your aggregator's compliance team has opinions about this; US: state regulators increasingly do too). Image compression can render statements illegible. And there's no structure at all: no checklist, no status, no audit trail.
Verdict: use it to prompt, never to collect. "Reminder by WhatsApp, upload via the link" is the combination that works.
The ranking, summarised
| Method | Time-to-complete | Touches/doc | Cost | Biggest weakness |
|---|---|---|---|---|
| 1. Dedicated portal | Days | ~1 | Subscription | Needs volume to pay back |
| 2. Cloud folder | 1–2 weeks | 2–3 | Free | No visibility or feedback loop |
| 3. E-sign attachments | Varies | 2–3 | Per envelope | Built for envelopes, not files |
| 4. Disciplined email | 2–3 weeks | 3–4 | Free | Runs on your discipline |
| 5. WhatsApp/SMS | — | — | Free | Compliance; nudge-only |
If you want method #1 without the evaluation project
Dossia is a document-collection portal built for mortgage brokers and designed around exactly the checklist above: one private link per borrower — no account, no app — automatic reminders that name what's missing, one-click validation with instant feedback, and a bank-ready export when the file completes. Hosted in the EU, GDPR-compliant by design. See how it works, or start a free 14-day proof of concept and measure your own time-to-complete-file before and after.